By the time the OS revisited and revised their mapping, it still appeared in broadly the same sub-rectangular form, though with rounded angles rather than sharp corners. Today, satellite imagery shows it has been levelled entirely, leaving no visible trace above ground.

Enclosures of this kind, typically earthen or stone boundaries defining a defined space, appear across Ireland in many forms and periods, from early medieval farmsteads to ecclesiastical precincts. The one at Tullaherin was recorded on the first edition six-inch Ordnance Survey map, a remarkable document produced in the 1830s that captured the Irish landscape in extraordinary detail at a moment before large-scale agricultural improvement had erased so many earlier features. That the enclosure survived to the revision suggests it remained at least partially intact for some decades after 1839. Its subsequent levelling, visible on imagery from July 2018, is a familiar story across the Irish countryside, where earthworks that endured for centuries have been removed within a generation or two of mechanised farming.